Seen as i fooked my door i may as well use it to practice spraying on, and there is apaint shop right near me, so gonna pop down there this week and get supplies, i know i need thinner and paint but thats all i know really, the car is diamond white, so how do i mix the paint up etc? and what sort of quantites should i be looking at? and is there anything else i need to add to the paint etc?

cheers